import router from './routers'
import store from '@/store'
import Config from '@/settings'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css'// progress bar style
import { getToken } from '@/utils/auth' // getToken from cookie
import { buildMenus } from '@/api/system/menu'
import { filterAsyncRouter } from '@/store/modules/permission'
const whiteList = ['/login']// ,','/set/systemParme' /operate/feedback' no redirect whitelist ,,', '/print','/quality/comment' /quality/comment' '/statistical/inquiry','/operate/inquiry'
let flag = true;//测试用 
router.beforeEach((to, from, next) => {
    if (to.meta.title) {
        document.title = to.meta.title + ' - ' + Config.title
    }
    NProgress.start()
    if (getToken()) {
        // 已登录且要跳转的页面是登录页
        if (to.path === '/login') {
            next({ path: '/' })
            NProgress.done()
        } else {
            if (store.getters.roles.length === 0) { // 判断当前用户是否已拉取完user_info信息
                store.dispatch('GetInfo').then(res => { // 拉取user_info
                    // 动态路由，拉取菜单
                    loadMenus(next, to)
                }).catch((err) => {
                    store.dispatch('LogOut').then(() => {
                      location.reload() // 为了重新实例化vue-router对象 避免bug
                    })
                })
                // 登录时未拉取 菜单，在此处拉取
            } else if (store.getters.loadMenus) {
                // 修改成false，防止死循环
                store.dispatch('updateLoadMenus').then(res => { })
                loadMenus(next, to)
            } else {
                next()
            }
        }
    } else {
        /* has no token*/
        if (whiteList.indexOf(to.path) !== -1) { // 在免登录白名单，直接进入
            next()
        } else {
            next(`/login?redirect=${to.path}`) // 否则全部重定向到登录页
            NProgress.done()
        }
    }
})

export const loadMenus = (next, to) => {
    buildMenus().then(res => {
        const asyncRouter = filterAsyncRouter(res)
        asyncRouter.push({ path: '*', redirect: '/404', hidden: true })
        store.dispatch('GenerateRoutes', asyncRouter).then(() => { // 存储路由
            router.addRoutes(asyncRouter) // 动态添加可访问路由表
            next({ ...to, replace: true })
        })
    })
}

router.afterEach(() => {
    NProgress.done() // finish progress bar
})